The main objective during a spring field campaign in April and May 2011 to Siberia was to sample frozen material from undisturbed drilling cores of 1 m length from permafrost-affected soils. Samples from depths of more than 0.5 m are rare from those regions due to difficult access to the currently perennially frozen soil layers. Though, these layers are of high interest because progressive thawing by climate change has already been observed, and with projected amplification of thawing, permafrost-affected soils will undergo fundamental property changes including deepening of the seasonally thawed active layer (KOVEN et al. 2011). As an essential effect of these changes, higher turnover and mineralization rates of the organic matter are expected to result in increased climate-relevant trace-gas release to the atmosphere (DUTTA et al. 2006, WAGNER et al. 2007, S CHUUR et al. 2009). With frozen and undisturbed samples from these rare depths, detailed pool estimations not only of organic matter contents but also of many interesting chemical soil properties such as nutrients or heavy metals concentrations can be performed. Such investigations can help to increase the quality of future permafrost and climate models. This field campaign was performed in central and north-east Siberia in alasses on the river terraces of river Lena near the town of Yakutsk and on Samoylov Island in the Lena River Delta to collect a sample pool for future laboratory soil analyses (Fig. 1).